18" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink Tamper-Proof Security – Features a

Tamper-Proof Security – Features a robust design to prevent unauthorized access and protect your thermostat settings

actual front end outer dimensions are approximately 28 5/8" width X 32 5/8" height

+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 27 3/4" x 1"

18" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Color_R-8.0 Pink Tamper-Proof Security – Features a+ Product Details Size 18"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 12" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable airflow